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Antoine Tenart says: ==================== net-sysfs: remove the rtnl_trylock/restart_syscall construction The series initially aimed at improving spins (and thus delays) while accessing net sysfs under rtnl lock contention[1]. The culprit was the trylock/restart_syscall constructions. There wasn't much interest at the time but it got traction recently for other reasons (lowering the rtnl lock pressure). Since v1[2]: - Do not export rtnl_lock_interruptible [Stephen]. - Add netdev_warn_once messages in rx_queue_add_kobject [Jakub]. Since the RFC[1]: - Limit the breaking of the sysfs protection to sysfs_rtnl_lock() only as this is not needed in the whole rtnl locking section thanks to the additional check on dev_isalive(). This simplifies error handling as well as the unlocking path. - Used an interruptible version of rtnl_lock, as done by Jakub in his experiments. - Removed a WARN_ONCE_ONCE [Greg]. - Removed explicit inline markers [Stephen]. Most of the reasoning is explained in comments added in patch 1. This was tested by stress-testing net sysfs attributes (read/write ops) while adding/removing queues and adding/removing veths, all in parallel. I also used an OCP single node cluster, spawning lots of pods. [1] https://lore.kernel.org/all/20231018154804.420823-1-atenart@kernel.org/T/ [2] https://lore.kernel.org/all/20250117102612.132644-1-atenart@kernel.org/T/ ==================== Link: https://patch.msgid.link/20250204170314.146022-1-atenart@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.